Phase one of RMIP

Ten research groups from the Asia-Pacific area are currently participating in the project, and eight of them have contributed their simulation results to RMIP's phase one. Phase one of RMIP for Asia reveals the capacities of regional climate models (RCMs) for simulating the Asian monsoon climate and extreme events as well (Fu et al., 2005).

The Domain of simulation

The simulation domain covers most of Asia and parts of the surrounding ocean waters in order to encompass the Asian monsoon circulation internally. Standard resolution is 60 km, resulting in a grid of 111 (latitude) x 151 (longitude) points. Except for Australia's Commonwealth Scientific and Industrial Research Organization (CSIRO) Division of Atmospheric Research Limited Area Model (DARLAM), which uses a polar stereographic projection, all of the participating RCMs use a Lambert conformal projection with true latitudes at 15° and 55°N. Phases one and two use initial and lateral boundary conditions supplied by the National Centers for Environmental Prediction (NCEP)- National Center for Atmospheric Research (NCAR) reanalysis (Kalney et al. 1996), whereas phase three will use output from simulations produced by CSIRO.

Validation data

A key part of RMIP is a comparison of models with observations. To this end, we have assembled a rich database of 710 observing sites for which 514 have daily records. These sites provide observations of temperature and precipitation. We complement this database with gridded analyses of monthly precipitation from Xie and Arkin (1997), for the areas where station data are either sparse or not available, several fields from the NCEP-NCAR reanalysis (Kalnay et al. 1996), and sea level pressure from the Japan Meteorological Agency.

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